function Preview(img){
    $(".jqzoom img").attr("src",$(img).attr("src"));
    $(".jqzoom img").attr("jqimg",$(img).attr("bimg"));
}

var _ele = $('#galleryThums li img:first');
var _ele_ = $('.jqzoom img');
var _jqimg = _ele.attr('bimg');
var _src = _ele.attr('src');
_ele_.attr('jqimg', _jqimg);
_ele_.attr('src', _src);

//图片放大镜效果
$(function(){
    $(".jqzoom").jqueryzoom({xzoom:360,yzoom:360});
});

//图片预览小图移动效果,页面加载时触发
$(function(){
    var tempLength = 0; //临时变量,当前移动的长度
    var viewNum = 1; //设置每次显示图片的个数量
    var moveNum = 1; //每次移动的数量
    var moveTime = 300; //移动速度,毫秒
    var scrollDiv = $(".spec-scroll .items ul"); //进行移动动画的容器
    var scrollItems = $(".thumnails_item"); //移动容器里的集合
    var moveLength = scrollItems.eq(0).width() * moveNum; //计算每次移动的长度
    var countLength = (scrollItems.length - viewNum) * scrollItems.eq(0).width(); //计算总长度,总个数*单个长度
      
    //下一张
    $(".spec-scroll .next").bind("click",function(){
        if(tempLength < countLength){
            if((countLength - tempLength) > moveLength){
                scrollDiv.animate({left:"-=" + moveLength + "px"}, moveTime);
                tempLength += moveLength;
            }else{
                scrollDiv.animate({left:"-=" + (countLength - tempLength) + "px"}, moveTime);
                tempLength += (countLength - tempLength);
            }
        }
    });
    //上一张
    $(".spec-scroll .prev").bind("click",function(){
        if(tempLength > 0){
            if(tempLength > moveLength){
                scrollDiv.animate({left: "+=" + moveLength + "px"}, moveTime);
                tempLength -= moveLength;
            }else{
                scrollDiv.animate({left: "+=" + tempLength + "px"}, moveTime);
                tempLength = 0;
            }
        }
    });
});